Which of the following are chemicals?

clothing

food

fuels

all of the above

Which one of the following best describes an acid? A. A substance that isn't soluble in water B. A substance that produces hydrogen ions in a water solution C. A substance that produces hydroxide ions in a water solution D.

136 grams of barium sulfate are used to make a 2.5 M solution. How many liters of water are needed?

Why is NaNO3 a homogenous mixture in terms of particle arrangement/composition?

Which statements is supported by the results of Rutherford gold foil experiment

Predict whether the compounds are soluble or insoluble in water. Soluble Insoluble

Ionization involves completely removing an electron from an atom. light of a particular wavelength can cause ionization to occur if it has the required energy. the energy to ionize a certain element is 342 kj/mol.

How many molecules are contained in a 7.20-g sample of dimethylmercury?

Could a nuecles of more than one proton but no nuetron exist? Explain

Which of this is the method by which fire extinguisher works? a) the cut of oxygen supply to the burning substance. b) the reflect away the heat because of there colour and does cool down the burning substance.

Stereoisomers are: Molecules that are coiled into compact and spherical shapes Molecules that release heat and have negative enthalpy changes Molecules with the same molecular formula but differ in the way their atoms are connected.